./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/add_last_unsafe.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43b935f2-1795-4c07-be2c-360430009bd1/bin/ukojak-verify-ENZ3QT5qd3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43b935f2-1795-4c07-be2c-360430009bd1/bin/ukojak-verify-ENZ3QT5qd3/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43b935f2-1795-4c07-be2c-360430009bd1/bin/ukojak-verify-ENZ3QT5qd3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43b935f2-1795-4c07-be2c-360430009bd1/bin/ukojak-verify-ENZ3QT5qd3/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/add_last_unsafe.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43b935f2-1795-4c07-be2c-360430009bd1/bin/ukojak-verify-ENZ3QT5qd3/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43b935f2-1795-4c07-be2c-360430009bd1/bin/ukojak-verify-ENZ3QT5qd3 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 48fd0d3fe19d1deb0a082df55a1274a55060d743a98a6889cf18bd32ae5a67a0 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-24 18:12:28,425 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 18:12:28,528 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43b935f2-1795-4c07-be2c-360430009bd1/bin/ukojak-verify-ENZ3QT5qd3/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2024-11-24 18:12:28,533 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 18:12:28,533 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2024-11-24 18:12:28,555 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 18:12:28,556 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 18:12:28,556 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 18:12:28,556 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 18:12:28,556 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 18:12:28,556 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 18:12:28,557 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 18:12:28,557 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 18:12:28,558 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-24 18:12:28,559 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-24 18:12:28,559 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-24 18:12:28,559 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 18:12:28,559 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-24 18:12:28,560 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 18:12:28,560 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 18:12:28,560 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 18:12:28,560 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-11-24 18:12:28,560 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-11-24 18:12:28,560 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-11-24 18:12:28,560 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 18:12:28,560 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-24 18:12:28,560 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 18:12:28,560 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 18:12:28,560 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2024-11-24 18:12:28,561 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 18:12:28,561 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43b935f2-1795-4c07-be2c-360430009bd1/bin/ukojak-verify-ENZ3QT5qd3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 48fd0d3fe19d1deb0a082df55a1274a55060d743a98a6889cf18bd32ae5a67a0 [2024-11-24 18:12:28,881 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 18:12:28,890 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 18:12:28,894 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 18:12:28,896 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 18:12:28,896 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 18:12:28,897 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43b935f2-1795-4c07-be2c-360430009bd1/bin/ukojak-verify-ENZ3QT5qd3/../../sv-benchmarks/c/array-memsafety/add_last_unsafe.i [2024-11-24 18:12:31,720 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43b935f2-1795-4c07-be2c-360430009bd1/bin/ukojak-verify-ENZ3QT5qd3/data/95d258db0/74dd1c240b3b4f89acfa7da0698eada9/FLAG9a868d4e6 [2024-11-24 18:12:32,051 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 18:12:32,052 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43b935f2-1795-4c07-be2c-360430009bd1/sv-benchmarks/c/array-memsafety/add_last_unsafe.i [2024-11-24 18:12:32,067 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43b935f2-1795-4c07-be2c-360430009bd1/bin/ukojak-verify-ENZ3QT5qd3/data/95d258db0/74dd1c240b3b4f89acfa7da0698eada9/FLAG9a868d4e6 [2024-11-24 18:12:32,082 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43b935f2-1795-4c07-be2c-360430009bd1/bin/ukojak-verify-ENZ3QT5qd3/data/95d258db0/74dd1c240b3b4f89acfa7da0698eada9 [2024-11-24 18:12:32,085 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 18:12:32,087 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 18:12:32,089 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 18:12:32,090 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 18:12:32,094 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 18:12:32,095 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 06:12:32" (1/1) ... [2024-11-24 18:12:32,102 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c3d519c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:12:32, skipping insertion in model container [2024-11-24 18:12:32,102 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 06:12:32" (1/1) ... [2024-11-24 18:12:32,142 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 18:12:32,438 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 18:12:32,450 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 18:12:32,488 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 18:12:32,510 INFO L204 MainTranslator]: Completed translation [2024-11-24 18:12:32,511 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:12:32 WrapperNode [2024-11-24 18:12:32,511 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 18:12:32,512 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 18:12:32,512 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 18:12:32,512 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 18:12:32,521 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:12:32" (1/1) ... [2024-11-24 18:12:32,536 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:12:32" (1/1) ... [2024-11-24 18:12:32,558 INFO L138 Inliner]: procedures = 115, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 55 [2024-11-24 18:12:32,559 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 18:12:32,560 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 18:12:32,561 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 18:12:32,561 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 18:12:32,567 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:12:32" (1/1) ... [2024-11-24 18:12:32,568 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:12:32" (1/1) ... [2024-11-24 18:12:32,570 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:12:32" (1/1) ... [2024-11-24 18:12:32,571 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:12:32" (1/1) ... [2024-11-24 18:12:32,579 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:12:32" (1/1) ... [2024-11-24 18:12:32,580 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:12:32" (1/1) ... [2024-11-24 18:12:32,583 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:12:32" (1/1) ... [2024-11-24 18:12:32,585 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:12:32" (1/1) ... [2024-11-24 18:12:32,586 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:12:32" (1/1) ... [2024-11-24 18:12:32,588 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 18:12:32,589 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 18:12:32,593 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 18:12:32,593 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 18:12:32,594 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:12:32" (1/1) ... [2024-11-24 18:12:32,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-24 18:12:32,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43b935f2-1795-4c07-be2c-360430009bd1/bin/ukojak-verify-ENZ3QT5qd3/z3 [2024-11-24 18:12:32,638 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43b935f2-1795-4c07-be2c-360430009bd1/bin/ukojak-verify-ENZ3QT5qd3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-11-24 18:12:32,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43b935f2-1795-4c07-be2c-360430009bd1/bin/ukojak-verify-ENZ3QT5qd3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-11-24 18:12:32,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-24 18:12:32,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-24 18:12:32,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-24 18:12:32,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-24 18:12:32,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 18:12:32,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 18:12:32,765 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 18:12:32,767 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 18:12:32,967 INFO L? ?]: Removed 32 outVars from TransFormulas that were not future-live. [2024-11-24 18:12:32,967 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 18:12:33,026 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 18:12:33,026 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-24 18:12:33,027 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 06:12:33 BoogieIcfgContainer [2024-11-24 18:12:33,031 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 18:12:33,032 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-11-24 18:12:33,032 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-11-24 18:12:33,045 INFO L274 PluginConnector]: CodeCheck initialized [2024-11-24 18:12:33,045 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 06:12:33" (1/1) ... [2024-11-24 18:12:33,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 18:12:33,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-24 18:12:33,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 26 states and 29 transitions. [2024-11-24 18:12:33,105 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2024-11-24 18:12:33,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-24 18:12:33,107 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-24 18:12:33,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 18:12:33,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 18:12:33,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 18:12:33,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-24 18:12:33,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 26 states and 28 transitions. [2024-11-24 18:12:33,307 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2024-11-24 18:12:33,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-24 18:12:33,309 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-24 18:12:33,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 18:12:33,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 18:12:33,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 18:12:33,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-24 18:12:33,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 25 states and 27 transitions. [2024-11-24 18:12:33,570 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2024-11-24 18:12:33,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-24 18:12:33,571 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-24 18:12:33,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 18:12:33,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 18:12:33,634 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-24 18:12:33,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 18:12:33,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 18:12:33,698 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-24 18:12:33,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 18:12:33,724 WARN L473 CodeCheckObserver]: This program is UNSAFE, Check terminated with 3 iterations. [2024-11-24 18:12:33,746 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 24.11 06:12:33 ImpRootNode [2024-11-24 18:12:33,747 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-11-24 18:12:33,747 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-24 18:12:33,747 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-24 18:12:33,747 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-24 18:12:33,748 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 06:12:33" (3/4) ... [2024-11-24 18:12:33,749 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-24 18:12:33,785 INFO L129 tionWitnessGenerator]: Generated YAML witness of length 4. [2024-11-24 18:12:33,836 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43b935f2-1795-4c07-be2c-360430009bd1/bin/ukojak-verify-ENZ3QT5qd3/witness.graphml [2024-11-24 18:12:33,837 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43b935f2-1795-4c07-be2c-360430009bd1/bin/ukojak-verify-ENZ3QT5qd3/witness.yml [2024-11-24 18:12:33,837 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-24 18:12:33,838 INFO L158 Benchmark]: Toolchain (without parser) took 1751.38ms. Allocated memory is still 117.4MB. Free memory was 92.9MB in the beginning and 81.2MB in the end (delta: 11.7MB). Peak memory consumption was 13.9MB. Max. memory is 16.1GB. [2024-11-24 18:12:33,838 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 167.8MB. Free memory is still 104.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 18:12:33,840 INFO L158 Benchmark]: CACSL2BoogieTranslator took 422.16ms. Allocated memory is still 117.4MB. Free memory was 92.9MB in the beginning and 76.5MB in the end (delta: 16.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-24 18:12:33,841 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.93ms. Allocated memory is still 117.4MB. Free memory was 76.5MB in the beginning and 75.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 18:12:33,841 INFO L158 Benchmark]: Boogie Preprocessor took 27.56ms. Allocated memory is still 117.4MB. Free memory was 75.1MB in the beginning and 74.3MB in the end (delta: 772.1kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 18:12:33,842 INFO L158 Benchmark]: RCFGBuilder took 442.37ms. Allocated memory is still 117.4MB. Free memory was 74.0MB in the beginning and 59.2MB in the end (delta: 14.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-24 18:12:33,843 INFO L158 Benchmark]: CodeCheck took 715.10ms. Allocated memory is still 117.4MB. Free memory was 59.2MB in the beginning and 85.5MB in the end (delta: -26.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 18:12:33,843 INFO L158 Benchmark]: Witness Printer took 89.89ms. Allocated memory is still 117.4MB. Free memory was 85.5MB in the beginning and 81.2MB in the end (delta: 4.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-24 18:12:33,845 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 1 procedures, 26 locations, 13 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 3, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5 mSDsluCounter, 4 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 28 IncrementalHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 4 mSDtfsCounter, 28 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 50 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 20 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - CounterExampleResult [Line: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L513] int i, j; [L514] int length = __VERIFIER_nondet_int(); [L515] COND FALSE !(length < 1) [L516] int *arr = __builtin_alloca (length); VAL [arr={2:0}, length=1] [L517] COND FALSE !(!arr) [L518] int *a = arr; [L520] int k = 0; VAL [a={2:0}, arr={2:0}, k=0, length=1] [L520] COND TRUE k < length [L522] arr[k] = __VERIFIER_nondet_int() * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 167.8MB. Free memory is still 104.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 422.16ms. Allocated memory is still 117.4MB. Free memory was 92.9MB in the beginning and 76.5MB in the end (delta: 16.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.93ms. Allocated memory is still 117.4MB. Free memory was 76.5MB in the beginning and 75.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 27.56ms. Allocated memory is still 117.4MB. Free memory was 75.1MB in the beginning and 74.3MB in the end (delta: 772.1kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 442.37ms. Allocated memory is still 117.4MB. Free memory was 74.0MB in the beginning and 59.2MB in the end (delta: 14.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * CodeCheck took 715.10ms. Allocated memory is still 117.4MB. Free memory was 59.2MB in the beginning and 85.5MB in the end (delta: -26.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 89.89ms. Allocated memory is still 117.4MB. Free memory was 85.5MB in the beginning and 81.2MB in the end (delta: 4.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2024-11-24 18:12:33,868 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43b935f2-1795-4c07-be2c-360430009bd1/bin/ukojak-verify-ENZ3QT5qd3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)